(review originally published in 2015, book purchased by reviewer)
Children’s Reiki Handbook by Pamela and Robert Yarborough
Other than the fact that all the photos here appear to be teens and tweens, I’m really not sure what makes this book specifically for children.
It is, however, an excellent and concise intro to Reiki. It covers history, techniques, what to expect at various levels of Reiki, and the Reiki symbols (although the inclusion of symbols in print is still something that Reiki practitioners disagree about), meditation, and chakras.
I’d probably recommend this to any beginning Reiki practitioner, but I’ll probably still be on the lookout for something that really is more kid-oriented.